* {
    margin: 0;
    padding: 0;
}

body,
html {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.n_main {
    width: 100%;
    height: 100%;
    padding: 10px 20px;
    position: relative;
}

.n_main p {
    margin: 20px;
    font-weight: bold;
}

.n_main p [type="text"] {
    width: 90%;
    border: none;
    outline: none;
    border-bottom: 1px solid #ccc;
}

.n_main p select {
    width: 100px;
}

.btn {
    width: 300px;
    height: 30px;
    left: 40%;
    position: absolute;
    bottom: 20%;
}

.btn button {
    width: 100px;
    height: 30px;
    background: #fff;
    border: 1px solid #ccc;
    border-radius: 5px;
    outline: none;
    margin: 0 10px;
}